$2 x - 3 \geq 9 x - 70$
$8x^3+12x^2+6x+1-9-48x-64x^2$
$2x^2+3x+1,\:x=1$
$6x-3<4x+1$
$\frac{\tan\left(x\right)+\sec\left(x\right)-\cos\left(x\right)}{\sec\left(x\right)+\tan\left(x\right)}=\sin\left(x\right)$
$18+x=27$
$n\sqrt{\frac{3^n+5^n}{3^{-n}+5^n}}$
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